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논문 기본 정보

저자정보
(Korea Marine Equipment Research Institute) (Korea Marine Equipment ResearchInstitute) (Changwon National University,)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제34권 제6호(통권 281호)
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    초록·키워드

    In this paper, an advanced method is proposed for estimating the non-acoustic parameters of porous materials. The parameters targeted for estimation include flow resistivity, porosity, tortuosity, and the thermal and viscous characteristic lengths within the Johnson-Champoux-Allard model. A genetic algorithm was employed as an optimal design technique to perform the estimation. To compute the objective function, the sound absorption coefficient and surface impedance were calculated within the 1/3 octave band, with Delany-Bazley’s law providing supplementary support. The results demonstrate that estimation accuracy improves for materials exhibiting relatively higher porosity and lower tortuosity.

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      UCI(KEPA) : I410-151-25-02-091244280